the digestive system
DESCRIPTION
The Digestive System. Ingestion Mechanical processing Digestion. 4. Secretion 5. Absorption 6. Excretion. Six Steps. Tooth decay by bacteria that produce acid and demineralize the enamel and dentin (form plaque on teeth). - PowerPoint PPT PresentationTRANSCRIPT
1. Ingestion
2. Mechanical processing
3. Digestion
4. Secretion
5. Absorption
6. Excretion
• Tooth decay by bacteria that produce acid and demineralize the enamel and dentin (form plaque on teeth)
• Inflammation and degeneration of gingivae (gums), alveolar bone, periodontal ligament, and cementum
• Myxovirus infects parotid gland- inflammation
• Fever, extreme
pain in throat• Swelling on one or
both sides of face• Testes can also
become inflamed• Immunization available
• Lower sphincter fails to relax
• Food passage impeded and food lodged in esophagus
• Lower sphincter fails to close
• Hydrochloric acid bubbles up esophagus
• Antacids help neutralize HCL
• Bulging of stomach through esophageal hiatus
• Narrowing of pyloric sphincter by enlarged muscle fibers
• Hallmark symptom- projectile vomit
• Surgery needed
• 5-10% of population• Normal balance
between destructive and protective forces upset
• Stimulated by Campylobacter pylori, stress, smoking, alcohol, coffee, aspirin, medications
• Mucosal cells of small intestine do not produce lactase
• Bacterial fermentation occurs and produces gas, bloating, diarrhea,
and cramps
• Medications available
Diverticula- saclike outpouchings of Diverticula- saclike outpouchings of wall of colon where muscularis weak wall of colon where muscularis weak
Become inflamedBecome inflamed Prevented by high fiber dietPrevented by high fiber diet
• First performed in 1989- 21 month old received part of Mother’s liver
– Liver regenerates well
• Also been done for pancreas, kidney and bone marrow
• Yellowish color of sclera, skin, and mucous membranes due to build up of bilirubin
• Three catagories– Excessive production of bilirubin– Dysfunction of liver cells– Blockage of bile drainage